Godot comes with a lot of tools in addition to the runtime. Maybe they are using the IDE to do layouts for the menu dialogues, for example.
Also, I am not sure about how easy it is to build binaries using SFML for various platforms (such as WASM), but with Godot you just have to download the right template.
Also, I am not sure about how easy it is to build binaries using SFML for various platforms (such as WASM), but with Godot you just have to download the right template.